One size too small. They did not fit properly I’m very careful about my shoes and these are already falling apart it seems. Terrible customer service. If anything, come up slightly large. Comfortable and warm slippers. I am really glad that I ordered these, they are true to size and how I can tell is, if it fits my left foot (because the left is the largest of the right and left foot LOL). It’s very long-lasting and trustworthy, it’s very protective of your back, and these belts are very sleek. It was a gift for my brother to go along with his AirPods which he uses daily. I usually find toe post sandals uncomfortable, however having had the Sketchers wedge flip flops for a while I thought Id be safe enough with these.